Route
SEA → JFK
Seattle–Tacoma International Airport John F. Kennedy International Airport
How punctual is this route?
- On-time arrivals
- 78.0%
- Less than 15 minutes late
- Cancelled
- 3.2%
- Of scheduled flights
- Average delay when late
- 74 min
- Flights arriving 15+ minutes late
- Flights tracked
- 2,906
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 41%
- Air traffic control & airport 34%
- Late-arriving aircraft 22%
- Extreme weather 3%
- Security 1%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 76.4% | 270 |
| October 2025 | 75.9% | 273 |
| November 2025 | 83.5% | 234 |
| December 2025 | 72.1% | 232 |
| January 2026 | 76.5% | 187 |
| February 2026 | 89.2% | 181 |
| March 2026 | 80.8% | 214 |
| April 2026 | 83.9% | 225 |
| May 2026 | 82.0% | 263 |
| June 2026 | 78.1% | 270 |
| July 2026 | 71.6% | 279 |
| August 2026 | 71.2% | 278 |
Source: U.S. DOT Bureau of Transportation Statistics on-time data, September 2025 – August 2026. Covers flights operated by reporting U.S. carriers. About our data
Airlines on this route
| Airline | Flights | On time | Cancelled | Avg. delay when late |
|---|---|---|---|---|
| Alaska Airlines | 1,402 | 77.7% | 2.6% | 58 min |
| Delta Air Lines | 1,338 | 79.3% | 3.2% | 75 min |
| JetBlue Airways | 166 | 69.9% | 7.8% | 172 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
DL429
12% late · 365 flights
-
AS34
23% late · 364 flights
-
AS26
13% late · 363 flights
-
DL415
29% late · 363 flights
-
DL452
16% late · 361 flights
-
AS16
36% late · 329 flights
-
AS22
16% late · 315 flights
-
B6264
30% late · 166 flights
-
DL1719
19% late · 132 flights
-
DL461
51% late · 86 flights
-
DL722
16% late · 31 flights
-
AS84
46% late · 28 flights
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